<!DOCTYPE html>
<html>
<meta charset="utf-8">
<head>
	<title>CSS内嵌式</title>
<!-- 	<style type="text/css">
		h2{text-align: center;}
		div{border: 1px solid red; width: 300px; height: 80px; color: blue;}
	</style> -->
<link rel="stylesheet" type="text/css" href="style.css">
<style type="text/css">
	.red{
		color: red;
	}

	.green{
		color: green;
	}


#bold{
	font-size: 18px;
}

</style>
</head>
<body>
<h2>内嵌CSS</h2>
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<h1 class="red" id="bold">red font</h1>
</body>
</html>